1255679 has 2 divisors, whose sum is σ = 1255680. Its totient is φ = 1255678.

The previous prime is 1255663. The next prime is 1255687. The reversal of 1255679 is 9765521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1255679 - 2⁴ = 1255663 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1255609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627839 + 627840.

It is an arithmetic number, because the mean of its divisors is an integer number (627840).

2^1255679 is an apocalyptic number.

1255679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255679 is an equidigital number, since it uses as much as digits as its factorization.

1255679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 35.

The square root of 1255679 is about 1120.5708366721. The cubic root of 1255679 is about 107.8846218682.

The spelling of 1255679 in words is "one million, two hundred fifty-five thousand, six hundred seventy-nine".